Fire and water tube boiler



Dec. '7, 1948.

v C. F. R. STALLBAUM FIRE AND WATER TUBE BOILER 2 Sheets-Sheet 1 Filed July l. 1.946

flllllll Dea-7, 1948- c. F. R. sTALLBAUM FIRE AND WATER TUBE BOILER 2 Sheets-'Sheet `2 Filed July l, 1946 Patented Dec. 7, i948 assign trattate uilrtyetivu l y and one-.third1 peryeent formatos: zflyo'ge, and i thirty-four andV pile-thirdu "per,y 'cent lfan' said jlhiszrinvention relates 1to avfboilerfor generator and an objectyofithis inventlonwrislto" provide a boilertlfnatis` `highlyz-eilicient.in the:`

generation: ofsteam andeconomical in iueliconsumption. N l l w .y Another Objectis `to provide a boilerihaving aflarge area of exposed heat .exchange sur-trace so that lsteam can `be quickly generated therein.

.Anothenobject is to provide a `boiler of strong andydurable construction that isreliable and` safe in operation. y AnothergobJeQt-isio contact the outside shell of thebOiIerl` tioned l in l the` path traversed by the hot `gases `on their wayf from theboiler,` tubes to the; ilue vso thatmuch oftheheatremaining inythese gases` will be vpickedup and utilized.;

asteam drum` and l in `which the hot `Waterdrum and steam `drum are) positioned `parallel toeach. other" sorthat large surface areas, loxrboth .off said i olrur'ns` are available for the attachmerltzfthereto` of a very large number of conduits `of small-diam eter which extend across the path of theheated gases that have "passed `overland through` the boilers.`

The abovehrnentioned general `objectsof ini vention,A together vvith` others inherentl inthe;

saine, are attainedrby the mechanismA illustrated in thefollowing drawings, the same being preferred exemplary forms of embodiment oli-my* invention, throughout which drawings like refe erence numerals indicate like parts:

Figure 1 `is aside elevation ofa boiler structed in accordance withlmy invention, parts" i being `shovvn by dotted lines;

Fig. 2 is a front elevationof` said boiler,` parts: being shown by dottedflines andpartstiming` broken away `to moreclearlyfshow otherrparts withinthe boiler housing; i

Fig. .3 `is a' sectional View:onfaflargerfscale ff said` boiler taken substantially` on .brokenf lino Fig. 4 isl a fragnientaryV sectional view` show "f ing` means used to connect a Watrldiim `tout` i boiler housing or shell; f and u provide altube type bollen' in which theheated gases not only `pass-through a they tubes of theboilerbutalso passaroundandt` abbattuta myn 1946, sensi-itt. esatti? "fjtoLi tratingv-a preferrd'iethod of making 'a boiler housing on shell `and a: preferred" manner 'of attaching the fend po'rtionsfof tubes to` the head or crown sheetof saidboilershell'..

v i: Thisw-steam` generator` comprises' a housing `1 of refractory; material; Asun-ih as re brick.A 9 Two boiler shells andl of fire` tub'e type "are supported; in side by Side horizontally spaced apart relation in-wthev housing 1; rPreferably generally louprightsupporting members I are used to sup` port the two shells 8 and 9.

Ani` upright baille `'Wall I Lof refractory material `extenlscrosswise ofthe housing 1 near the front ends-of` themboiler4 shells Il` and 9.7 Preferably the 1:5` upper-poigtlonof this baille wall'uis suitably shaped Anotherobject is toprovide :a hoileriwinwhich;` the water and steam passes through aplurality; 1 of closely spaced pipes or tubes which arefgposifu tot,the contouryof the boiler shells V8 and 9.

Preferably this baffle wall Il terminates a short distance above a horizontal plane that is tangent t towtheflovvernjlostgpgrtions of-thetwoboiler shells 20 8am-:l QiseeFig-l `1,

A pqmlg'ustion chambery!! (see Fig. 3) is Aprovided in frontier the baille wall `Il and heat generating meansgsuoh as oneor more oil burners I3,` are provided `to kmaintain combustion. A

chanlbertl or theicirculatlonof heated gases is proyid Withinitheahousirig 1 to the rear of the `It; constructing the boiler shells 8 and 9 the end portions or; crown sheets 1 5 thereof are pref-` 30erably e ch madein'the shape (shown, in Fig. 5, and the nd portionsjareseured to the medial cyiidrierportibnsifofthesheus by butt welds IB; t l t l, fgliirality `ofttiretnbesu-loriiues I1 extend f fw epi eachboilershell 8 and 9. `Preferably;y the end portions of these tubes Il extend thro extenitiuyeoiithoed` holes la in the and s nasa mnner@ 2| u fp thereof. Each osedand sealed by a removable g2; insa trash t Y `xriiirise new shells l allar I tl iid` iaafe 'their ,estre 'ities-f upset "te v:erm 1 mienne-lanas), A

flexible stay bolt 25 is provided with a round head 26 and at the other end with a threaded portion 21. The round head 2B of the bolt 25 interflts with a recess in the bracket 24. The threaded portion 21 -interi'lts .with-threads gin; anr opening in the crown fsheets 1.51-, After tht-estar boites'.

has been positioned, preferably the end thereof is cut flush with the outer surface of sheets |51 1j:,

and the outer surface welded. Sliding and turn-y ing movement between the bracket24" and'the stay bolt is termed a fiexibles'taybolt. -l`

A cylindrical hot water drum 281ispositio`ried I 4. on top of the two boiler shells`8ahd9 'and'exQVA tends crosswise thereof at a location preferably ,I employed to automatically maintain the desired I0- end portion of 25 toward head;25 ispermitted during expansion and contraction-'and,thuswthe.

about one-third of the distance from the ,front y; f1

to the rear end of said shells. The hot water drum 28 is communi-catively connected with each'shell 8 and 9. Preferably the connections between these parts are made,` see-Figi'4fby providing-a flange 29 on shellsxand 9 `(shell 9 being `shown in Fig. 4) ywhich registers with a flange V3|JL-onv drum 28. These flanges 29-and` 30 are provided with machinedsurfaceswhich are positioned in abutting relation. .A plurality of rivets 3| interconnect flanges 29%and 30. The-flange 29 has .a shoulder. 33. vA tubeor pipe-'32 extends through' an opening in th'e flanges 29and 3U and against (see Fig.l). y

A steam drum 35is supportedat therearof the housing 1,' crosswise 'of said housing :1 and parallel with the hot water drum' y28 and at 3,740

higher elevation than said hot waterfdru'm 28.

A plurality'of pipes orconduits 36 connect-the hot Water drum 28 with the steam drum 35. 'l'.hesel g pipes 36 are connected atr'one end 'withthe up'per` half` of the'hot waterdrum 2B and'at'the vother end with the lower -half of Ythesteam drum* 35:l

All of these pipes have an upward incline from the hot water drum 128 to the Asteamfdrum 35..

Where it is necessary, these pipes 35 are bentgat the locations where they 'are connected with'the two drums 28 and 35 but-all bends in Vthesepilgies are made on an easy andgradual curvature.

The tw-o drums 28 and 35 are parallel to each.'

other and are ofla-rge enough'size so `that/there is ample surface area on these drums for the con-.1 nection therewith of a large num-ber'ofthe conduits 36. These pipes are' relatively close't'ogether and extend across the'path traversed by the heated gases and lbyi products of 'combustion' on their way from the boilers tofa smoke stack or flue 31.

The steam drum 35 ispreferably provided, at one end, with 'a man hole having a removable- Also theuppl'ivst portion of this.,v steam drum 351s provided withasafety valve 39, and a steam drawoif `'conduit4,0(fragments'of cover 38.

each being shown in Fig. 2).` l A feed water inlet pipe 4I is connectedswith'zthe steam 4drum 35.

.70 are connected with-the ,topV portion of the ,steam` i drum 35.. fIyhe feed waterinlet 4pipe ,4I is.pref

erably lconnected l with oneendigportion, of -the f steam drum 35 about half Lway betweenthe Vrtop. and bottom of saidsteam, Watenissupf,

The safety valve 39 and steam drawoif -pipe -4'8 ,35s drum 28 and is closed by a man hole cover 34A water level.

water circulation pipe 42 is connected with the lower portion, of the steam drum 35 and exi'tendsidownwardly through one wall of the housingl andfthence across said housing 1. Two upright lpipes 4'3and'44 connect the pipe 42 with the lower portions of the respective |boiler' shells 8 jand9.f Ayalve45'is provided in the water circulation pipe 42 between the steam drum 35 and th'eboiler shells 9 and 9.V A blow out valve 46, a fragment of which is shown in Fig. 2, is connectedwith the pipe 42 externally of the housing 1 and beyond the location where the pipe 4`2 is connected with the boiler shells 8 and 9.

Preferably at least one inspection door 41 is provided in the rear end of the boiler housing 1. In'the operationof this steam generator, the heated'products of combustion pass both through the fire-tubes Hand around the boilers 8 and 9 forheati'ng the-water in the boilers 8 and 9. The water thus heated rises into the hot water ydrum 28 and thence passes through the conduits 36, where most of this water is evaporated into steam, andinto the steam drum 35.' The steam collects inf the topportion of the' steam drum 35 and can be drawn off through the conduit 40. Hot water fromfthe steamcdrum 35 passes through the water circulation pipes 42, 43, and 44 into the boilers 8and.9.-

vThe conduits 36 wherein vmost of the steam is formed are many in number, are of relatively small diameter, and extend across the path traversed by the heated combustion products after they leave the boilers 8 and 9. These conduits v36 thus operate efciently in generating "steam andiriV utilizing the heat remaining in the discharging combustion products.

Obviously; changes may be made in the forms, dimensions, andarrangement of the parts of my invention, without departing from the principle thereof,v the above setting'forth only preferred forms off embodiment' 1. A steamfgnerator comprising a horizontal fire tube lboiler having passageways therethrough Vandtherearound; rcombustion type heating means at one end` of said boiler; means at the other end of saidboiler -providingan outlet passageway for heatedcombustion' gases that have passed through and around said boiler; a hot water drum extendingl across the top of said boiler at one side of said gas outlet passageway and communicating-with said boiler; a'steam drum positioned substantially parallel with and above the level of said hot water drum and at the opposite side of said gas outlet passageway; and a pluralityffof -conduits of relatively small diameter communicatively connecting said two drums and extending across said gas outlet passageway.

2. A steam 4generator comprising a plurality of sidelby sideparallel horizontal fire tube boilers having passageways therethrough and therearound; combustion type heating means at one end of saidboilers; means lat the other end of said boilers providing an outlet passageway for heated combustion gases that have passed through and around said boilers; a hot water drum extending across the top of said boilers at one side of said gas outlet passageway and communicating with all of said boilers; a steam drum` positioned substantially parallel with and above the level oi said hot water drum and at the opposite side of said gas outlet passageway; and a plurality of conduits of relatively small diameter communicatively connecting said two drums and extending across said gas outlet passageway.

3. A steam generator comprising a horizontal re tube boiler having passageways therethrough and therearound; combustion type heating means at one end of said boiler; means at the other end of said boiler providing an outlet passageway for heated `combustion gases that have passed through and around said boiler; a hot water drum extending across the top of said boiler and communicating with said boiler; a steam drum positioned substantially parallel with and plurality of horizontal parallel re tube type boilers in said housing supported in spaced relation from each other and from the walls of said housing and having passageways therethrough and therearound; means forming a combustion chamber forwardly of said boilers communicating with said passageways; said means including a transverse baille wall adjacent the front ends of said boilers extending from the bottom of said housing Aupwardly to a point a short distance above the bottom plane of said boilers, a fuel burner in said combustion chamber, whereby heated products of combustion will be directed upwardly and caused to pass around the outside of said boilers and through the fire tubes of said boilers; means at the rear ends of said boilers providing an outlet passageway for heated cornbustion` gases that have passed through and around said boilers; a hot water drum extending across the top of said boilers and communicating with said boilers; a steam drum positioned substantially parallel with and above the level of said hot water drum and at the opposite side of said gas outlet passageway from said hot water drum; and a plurality of conduits communicatively connecting said two drums and extending across said gas outlet passageway.

CHARLES F. R. STALLBAUM.

REFERENCES CITED `The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 645,090 Hannam et al Mar. 13, 1900 843,497 Schtte Feb. 5, 1907 FOREIGN PATENTS Number Country Date 240,546 Great Britain Oct. '5, 1925 315,473 Great Britain July 15, 1929 

